Managing validity versus reliability trade-offs in scale-building decisions.

Scale builders strive to maximize dual priorities: validity and reliability. While the literature is full of tips for increasing one, the other, or both simultaneously, how to navigate tensions between them is less clear. Confusion shrouds the nature, prevalence, and practical implications of trade-offs between validity and reliability-formerly called paradoxes. This confusion results in most trade-offs being resolved de facto at validity's...